Pipe cleaning device



Aug- 15, 1944. c. `A. JOHNSON ET Al. 2,355,733 i PIPE CLEANING DEVIC Filed March 15, 1941 sheets-sheet 1 E "wn/ l0/of SS s g i Q 1 u) N All@ 15, 1944 c. A. .loHNsoN ET AL 2,355,733

PIPE CLEANING DEVICE Filed March 15, 1941 8 sheets-sheet 2 BY (16a/725 ef. IJay/mm ATTORNEYS Aug. 15, 1944.

c. A. JoHNsoN ETAL 2,355,733

PIPE CLEANING DEVICE `Filed March l5, 1941 8 Sheets-Sheet 3 Ey-f 9 48 'fil 41 Y f INVENToRe, l 39 g/m .2.7. Bays I ATTORNEYS Aug. 15, 1944. c. A. JoHNsoN' ETAL 2,355,733 5 PIPE CLEANING DEVICE Filed Maron 15, 19'41 a sheets-sheet 4 myENTORS 6760/1 Z. ugs Y @a/'[65 f7. 17E/)E500 fAugf 15, 1944. c. A. JOHNSON ETAL PIPE CLEANING DEVICE Filed March 15, 1941 8 Sheets-Sheet 5 Aug. 15, 1944. Q A JOHNSON AL 2,355,733

Y PIPE CLEANING DEVICE i Filed March l5, 1941 8 Sheets-Sheet 6 E VN l 1j I u;

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I V' l f x f v VA v/f/(Afr y l I INVE @R5 v fffad I H haags Aug 15, 1944.` c. A. JOHNSON E'rAL l 2,355,733

PIPE CLEANIEG DEVICE Filed March l5, 1941 8 Sheets-Sheet '7 A118- 15, 1944 c. A. JHNsoN ETAL 2,355,733

- PIPE CLEANING DEVICE INVENTORS 6760/? E'. uys

sible to the operator.

Patented Aug. 15, 1944 I PIPE CLEANING DEVICE charles a Johnson mi Glenn E. Buys,-1-im, i Mich.; said Johnson assignor to said Buys Application March 15, 1941, serial No. 383,508

` 19 claims. (Cl. 151o4.30i

'I'his invention relates to an improved pipecleaning device adapted to clean' and remove ob` structions-from sewers, drains, and the like.

In devices of this character, it has been common to use a flexible cableprovided with a cutting element. Penetration of the cable and cutting elementinto the pipe has been utilized to remove obstructions and clean the pipe., It is desirable to rotate this cable as well as feed it ,longitudinally through4 the pipe. Prior devices have proved dangerous and unsatisfactory in that they have necessitatedthe operator's handling of the rotating flexible cable.. Many prior devices utilized power means to rotate the flexible cable,A but required the operator to manually feed the rotating cable into thepipe. It is dangerous to touch the rotating cable, and when the rotating cable has encountered obstructions in the pipe it has been found that it possesses a tendency to whip or snap and injure the `operator.V An aim of the present invention is to prohazards tothe operator. Y

In the operation ofa pipe-cleaning device it is vide a pipe-cleaning device that removes these also necessary to provide 4a. device capable oi passing through sharp angles and lobstructions in the pipe. i The particular motion `imparted to the adapted to feed the flexible cable around corners and the like 'in the pipe. This motion referred to is a continuous rotation 'of the exible cable and an intermittent longitudinal motion. It has been found desirable not to reverse the direction of rotation ofthe flexible cable when it is Adesired to retract the iiexible'cable Aand remove it from the' pipe. Thus only the longitudinal movement is reversed. This permits the cutter to cut a. separate path of an opposite `helix on its retraction and more thoroughly clean the pipe.

To increase the safety features of this device a remote control and sheathed cable are provided. This permits the operator to stand adiacent'the entrance to the pipe and operate the machine by'means `of controls in his hand. The live cable, however, progressing from the machine into the pipe is completely covered and inacces- This prevents the operator from being injured and obviates the necessity of moving the device up tothe entrance to the pipe.

A means is also provided to prevent the cable from being forced back'into the machine when the cable encounters an obstruction in the pipe.

A furthercbiect of this device is to facilitate repairs by mounting the drive means in an in- A chine.

flexible cable by the present device ispeculiarly tegral removable unit. This permits a ready removal of the drive means and substitution of a replacement drive means as anjintegral unit when parts become worn. The drive means contains the parts most likely to wear-fout.

Otherrobjects and advantages of the invention will be described herein. In the drawings: Y

Fig. 1 is a side elevationof thecompletema- Fig. 2`is an. enlarged view of the remote control an'd the conduit, protecting the operator from the cable at its entrance into the sewer or Pipe- Fig. 3 is a diagrammatic view ofthe switch and solenoids whichV control the feeding means. Fig. 4 is a pian view of the machine. Fig. 5 is a section on the line 6 5 of Fig. 4, showing the feeding mechanism in neutral or in- 20 operative position.

Fig. 6 is a view similar to Fig. 5 but showing the drivemechanism at the beginning oi `a forward stroke.

Fig. 7 is a view similar-to Fig. 5 but showing lthe drive mechanism at .the beginning oi.' a reverse or retreating stroke. Fig. 8 isa perspective view of the cable-engaglhs dos.

Fig. 9 isa view on the line l-S of Fig. 5.

3o Fig. 10 isa view on the line IO-ilor Fis. 5.

Fig. 11 isa view on the Vline II'- I"i of Fig. 5.

Fig. 1 2 is a detailed view showing the mounting of the cam` which controls the dog adapted to prevent the cable from being forced back into the reel when the cable encounters an obstruction. Y

Fig. 13 isa vertical section ofV a modiiled form of the driving means showing this means driving l the cable into the pipe.

Fig; 14 is a plan view `o f a portion of the device of Fig. 13.

Fig. l5 is a view of the modified device similar to Fig. 13, but showing the drive means inv an inoperative position. i

Fig. 16 isa view of the modified device similar to Fig. 13, but showing the drive means retracting the cable.

Fig. V17 is a vertical section of another modiied form of the invention.

Fig. 18 is a horizontal section of the device shown in Fig. 17. l

Fig. 19 is a section aiongthe line IS-IS of Fig. 18. i

Fig. 20 is a section along the line 20-20 of Fig. 18.

i movement of the rotating flexible cable.

Fig. 21 is a section on the line 2I--2I of Fig. 20.

Fig. 22 is a section on the line 22--22 of Fig. 17. Fig. 1 shows a side view of the device comprising a cutting element I on a flexible cable II, which is wound within a reel I2 mounted on a frame I3. Drive means is interposed between the reel and cutting element.

The device is preferably able supporting structure I4 provided with a pair of wheels I5 and astand I6. The supporting structure is provided with co-axial bearings l1 and I8. The rectangular frame I3 is provided with journals I9 and 20 upon its longitudinal axis. The frame I3 is rotatably mounted in the supporting structure I4, and the journals I9 and 20 are rotatably received by the bearings i1 and I8. The internally wound circular reel I2 provided with journals 23 and 24 is rotatably mounted in the frame I3 by the journals 23 and 24 which are received in the bearings 2| and 22 respectively. The exible cable II is wound within the reel I2 mounted upon a portand one end of the cable extends from the reel through a guide member 25 and through an opening in the journal 20 to be received within the drive mechanism and fed into the sewer or pipe.

Suitable power means shown as an electric mo- `tor 26 is adapted to rotate the entire vframe I3.

This rotation is effected by alpulley wheel 21 mounted upon the shaft of the electric motor, and

a pulley wheel 28 provided with a worm 29 adapted to engage worm'gear`30 on the frame I3. A suitable belt 3| connects the pulley wheels 21 and 28. Thus rotation of the armature of the electric motor rotates pulley wheels 21 and 28 which rotate the frame I3 and impart to the flexible cable extending into the drive means a rotating movement.

The freely rotatable reel permits longitudinal A drive means is provided to longitudinally feed the rotating cable into the pipe. The longitudinal movement to be given to the cable is peculiar in that it is intermittent. This has been found to facilitate the progress of the cable and cutter around sharp corners in the pipe. The driving means adapted to give the cable this motion comprises an eccentric 32 keyed to the hollow rotatable journal 20.

The periphery of this eccentric is circular, and a sliprV ring 33 is mounted thereon. Pivotally mounted upon-the slip ringj33 is a link 34. It will thus be seen that rotation of the hollow journal or shaft 20 will rotate the eccentric 32 and cause reciprocating vertical motion in the link 34. A bell crank35 is pivotally mounted on a. portion of the supporting member at 36. One leg of bell crank 35 is pivotallyfastened to the link 34. A

bifurcated yoke 5 is slldably mounted on the other leg of the bell crank 35. The bifurcated yoke is pivotally fastened to a sleeve 31, slidably mounted concentric with the cable. It is, therefore, apparent that the vertical reciprocation of link 34 causes the sleeve 31 to. reciprocate horizontally as shown in Fig. 1.

The sleeve 31 is providedy with a vertical slot Y. adapted to receive a dog 39 provided with oppositely directed teeth 40 and '4I which engage the cable alternately. The dog 39 is pivotally mounted within the sleeve 31 upona shaft 42. A U- shaped plate 43 is also pivotally mounted upon the shaft 42V. Coil springs 44 and 45 resiliently engage plate 43 and dog 39.` Fig. 5 shows the dog and plate 43 in neutral position with teeth 40 and 4I outV of engagement with the cable.

Camming they as illustrated in Figs. 6 and '1.

Fig. 6 shows the dog 39 cammed down with the tooth 4I engaging a` land in the iiexible cable. Reciprocation of the sleeve 31 in the manner hereinabove described will, through shaft 42,1reciprocate dog 39 which, by reason of the engagement of tooth 4I in the cable, cause the cable to move forward longitudinally into the pipe. When the sleevehas reached the limit of its forward stroke and begins to return, the tooth 4I, which presents an inclined surface on its back face, will slide over the cable in a manner comparable to a ratchet. Repetition of these motions will cause periodic forward movement of the cable which is the intermittent motion referred to above. When it is desired to reverse the cable and retract it from the pipe backinto the reel, the opposite end of the dog 39 is cammed down so that the tooth 40 engages the cable. The tooth 40 is inclined in a direction opposite to that of the tooth 4I, and the motion will be similar but in reverse to that just described for feeding the cable into the pipe;

dog downward at either end will determine the that is, the cable will be retracted by the sleeve 31 but the dog will slide'over the cable as the sleeve 31 advances to the right as shown in Fig. '1.

A means to selectively cam down the opposite ends of the dog 39 willf-be described. As illustrated in Figs. 5, 6 and 7 akshaft 44 is pivotally mounted above the dog 39 and plate 43. The plate 43 is provided with up-turned ends 45 and 43. Two off center cylindrical members 41 and 48 are keyed to the shaft 44. The members 41 and 48 are in plane although they are not co-axial. Rotation of the shaft 44 will therefore alternately present either the member 48 or 41 in a downward position. These members 41 and 48 are adapted to engage the ends 45 and 46 respectively of the plate 43 and thus cam the opposite ends of the dog 39'downward. The position of the cylindrical members 41 and 48 therefore determines the direction of the longitudinal movementof the Vflexible cable. Suitable control means to rotate the shaft 44 are provided in a flexible wire 50 eccentrically fastened to the shaft 4'4, and a core 4' fastened to flexible wire 50 and slidably mounted in a horizontal Vplane neither of the ends 45 or 48 ofA plate 43 are engaged. This is the neutral or ,inoperative position shown in Fig. 5.

A dog 5I serves the function of preventing return movement of the cable when it encoun- `tersan obstruction. The dog 5I resiliently permits the cable to be fed longitudinally past it into the pipe but prevents a reverse movement of the cable. This dog may be disengaged when it is desired to retract the cable from the pipe and rewind it uponfthe wheel. The dog 5I is pivotally mounted at 52 upon the rotating journal 20. A spring 53 acting between the eccentric 32 and dog 5I causes the dog to resiliently engage the cable with a tooth 54 inclined away from the reel I2. A frusto-conical surface 55 upon a ring 56 circumscriblng a stationary sleeve 51 which is co-axial with the cable controls the dog 5I. A slot 58 and key 59 cam the ring 56 longitudinally so that the surface 55 may disengage the tooth 54 when the ring isrotated. Suitable links 60 fastened to shaft 44 control the rotation of the ring 5G and, therefore, the

engagement of the tooth 54. This linkage should be so arranged that the tooth 54 is only disengaged when the cylindrical member 41 is in its lowered position actuating tooth 40 to retract the cable. spring 53 causes the tooth 54 to engage the cable.

A flexible conduit 6| co-axial with the sleeve 55 receives the cable from the feeding means. The moving cableis completely encased and the operator is protected from it. Ata remote point upon the conduit 6| is mounted'the control member 49 and an electric switch 62 which is connected tothe solenoids 2 and 3 (see Fig. 3). A curved pipe 63, as illustrated inFig. 2, extends from the control member to the entrance to the sewer or pipe. The switch 62 referred to is spring actuated so that when the switch handle is pivoted under the pressure of the operators finger one of the solenoids is actuated and relea'se of the operators nger disconnects the solenoid and allows spring 6 to automatically neutralize cylindrical control members 41 and' 48. This is a safety feature so that when the cutters 'engage an obstruction and the operators attention and strength is required to hold the curved pipe 63 over the pipe entrance, h e need not release his hands to find an additional push button to stop the longitudinal feed of the cable. A mere lifting of a` finger neutralizes the driving means. The flexible conduit 6| permits the operator to direct the cable intoV the pipe.` y y o The entire drive means is mounted within a U-shapedframe 64 which is removably carried by the supporting member |4. Removal of the U-shaped member 64 and its associated parts removes the entire drive means as an integral unit land these may be replaced as a unit.

An arcuate `member 645 is mounted within the sleeve 31 and adaptedto receive the lower'side of the flexible cable. The member 65`has a serrated surface of thesame pitch as the winding of the cable. The cable is therefore engaged by the tooth 40 or 4|'on one side and the member 65 on the opposite side. The member 65 moves with the sleeve 31 and aids in the driving of thecable. A'slot `66Y is provided in the sleeve 51 to "permit reciprocation of the member 65.

A modied form of drive means 1s s howndn Figs. 13, 14, 15 and 16. The basic distinctien'fin Vso this driving means fibm thatdescribed above'is that in the modified form the dogs or teeth which engage the flexible cable rotate 4with the cable and do not merely have a longitudinal movement. They are used to create longitudinal movement in the cable but freely rotate with it and do not resist its rotation. The cable is rotated in the same manner as described above.

A rotatable shaft or journal 20 and eccentric 32, ring 33, link 34 and bell crank 35 are provided'as in the form described above to create a reciprocating longitudinal movement. The dogs 10 and 1| are, however, pivotally mounted in a rotatable sleeve 12 provided with the arcuate member 65 which engages one side of the cable. The sleeve 12 is provided with a circumferential cam slot 13 adapted to receive one end of the yoke on the bell crank 35. Relative rotation between the .sleeve 12 and bell crank 35 is thereby permitted andoscillation of the bell Vcrank 35 reciprocates the sleeve 12. When one A of the dogs 18 or 1| is in engaging relation with the cable the longitudinal reciprocation ofsleeve a 12 causes longitudinal movement of the cable in a manner similar to that described above in the principal form.

When the ring 56 is retracted` the,

`engagement of dogs 10 and'll. Fig. 13 shows the dog 10 engaging the cable and feeding the cable into the pipe or sewer. Fig. l5 shows the device in neutral or inoperative position with both of the dogs 18 and 1| disengaged from the cable. Fig. 16 shows the dog 1| engaging the cable and retracting the cable back into the reel. Each of the dogs 10 and 1| is provided with a cam surface 14. A cylinder 15 circumscribes the sleeve 12 and is positioned between` and in abutting Vrelation with the cam surfaces 14 of dogs 10 and 1|. Cylinder 15 is provided with a suitable opening 81 which permits the bell crank 35 to enter cam slot 13.` An eccentric 18 mounted on shaft 18 projects through an opening 11 in the cylinder 15 and permits axial movement of the cylinder 15 by rotation of the shaft 18. It is apparent, therefore, that the shaft 18 may be rotated to cause the cylinder 15 to engage either the dog 10 or the dog 1|. Engagement of the cylinder with a dog causes the latter to be pivoted and disengaged from the cable. Coil springs 19 and 80 mounted in the sleeve 12 engage the dogs 1D and 1| respectivelyand urge them into engagement with the cable. The dogs 1U and 1| are inclined in opposite directions and therefore each has a sliding movement over the serrated surface of the cable in one direction" and a drive in the opposite direction.- A middle position is provided for v cylinder 1,5 in which both clogsV will be disengaged from the cable. This is an inoperative or neutral position; It is apparent that the sleeve 12 with 18 is rotatably and slidably mounted in the cam slot 13. The fork 82 is rotatably mounted relative to a sleeve 83 surrounding the cable. Sleeve 83 is preferably an extension of journal 20. Slight rotation of the fork 82, therefore, rotates shaft 18 and provides a selective control for enreciprocating motion is ygagement'of the dogs with the cable. A dog 84 is mounted in a housing `keyed to rotatable sleeve 83 and urged by spring 88 into resilient engagement with the cable. Dog 84 performs the same function as the dog 5| in theprincipal form deiscribed above. Sleeve 83 is provided with a slot l88 to permit the dog 84 to engage the cable. This dog is adapted to engageV the cable atan angle inclined away from the cutting end of the cable andprevent the cable from being pushed back into the reel when the dog 1U` is moving to the left in Fig. 13 and performing its ratchet motion. This occurs on the return of the sleeve 12 to its initial driving position. A frusto-conical cam surface 89 is provided on a ring 80 which surrounds the sleeve 83. The ring 90 is operatively connected to Work member 82 and provided with a cam surface 8| adapted to engage a cam surface 92 on a stationary member 93. The frusto-conical cam surface 89 is adapted to engage the dog 84 and disengage the latter from the cable.` It is apparent-,ftherefora that rotation of the fork 82 to selectively control thedrive of the cable simultaneously rotates the ring 80 permitting cam surfaces 8| .and 92, to engage and move the cam surface 89 into contactwith the dog 84. These parts are so arranged that the dog 84 is disengaged from thecable only duringV the time that the dog 1| engages thecable to retract the same.

In the operation of this form of the device a `given to sleeve 12 by rotation of the eccentric 32 and ring 33 which rock the bell crank 3,5. Crank 35 engages sleeve 12 in a circumferential cam slot. When the dog 10 is in engagement with the cable the reciprocation of sleeve 12 drives the cable intothe pipe on motion from left to right of Fig. 13. On the return part of the reciprocation of sleeve 12 the dog 10 rides freely over the surface of the cable in aL ratchet movement for the dog 'I0 on its back f side does not prevent a sharp angle to the cable.

Rotationof fork 8| may disengage the dog 10 and engage the dog 1|., The same reciprocating motion of sleeve 12 will retract the cable when thedog 1| is in engagement therewith. Dog 84 which resiliently engages the cable prevents the latter from being forced back into the reel when the positive pressure ofdog 10 is absent and the cable is being fed into the pipe. `Sleeve 12, dogs 10 and l1I and housing 85 with dog 84 rotate freely with the cable. It is to be understood that l the cable is rotated in the manner set forth with reference to the principal form.

A further modied form of the invention is shown in Figs.rl7 through 22. The frame and reel members of this form of the invention are substantially identical to that previously described. The remote control and power means is also similar. A longitudinal movement of the cable is caused by means-of pins |00. A plurality of pins are slidably mounted through the facer of a driving wheel |0|. The pins are positioned in holes spaced about the arc of thecircle in the face of the wheel I0|. An idling wheel |02 is provided on the opposite side of vthe. cable.

Wheel |0| is keyed to a shaft |03 extending transversely of the direction of the feed of the cable.

Wheel |02 is rotatably mounted on shaft |03. A

cam surface |04 is provided upon the interior of avhousing |05 enclosing the wheels and shaft |03. Openings are provided in the housing |05 to permit passage of the cable therethrough As shaft |03 is rotated the pins |00 are cammed into engaging relation with the cable as they approach their uppermost position. As they rotate through a small angle in this uppermost position they cause a positive drive of the cable which is retained between the rotating driving and idling l wheels.

The means provided to cause rotation of the rotate with the cable. A belt |06 connected to the power meansrotates a. worm gear |01 which is in engagement with the pinion gear |00. The pinion gear |08 iskeyed to a sleeve |09 circumscribing the cable. Sleeve |09 is vintegral with housing |05. Bevel gears I|0 and III are rotatably mounted on sleeve |09 on opposite sides of housing |05. A gear H2 is keyed to the shaft `|03 andvadapted to engage bevel gears IIIl and III.

stationary imparts a rotation to the gear` H2- and shaft |03. Referring to Fig. 18it is seen Vthat this rotation would be in a clockwise direction. The bevel gear |II which is in engagement with the gear I|2 would ht ve no effect for it would be freely rotating and carried by gear ||2. If, however, the toothed rwheel H4 was freed and the toothed wheel H3 held stationary shaft |03 also permits the wheels IOI and |02 to the same procedure would be followed except that the rotation would be in a counter-clockwise direction. Gears ||0, |I| and I|2 are not necessarily bevel gears.

Illustrated in Fig. 19 is a. means to selectively cause either vthe bevel gear ||0 or to be held stationary in the manner referred to. Fig. 19 shows the toothed wheel IH. A dog |20 is pivotally mounted upon a stationary object and adapted to engage the toothed surfaces of the wheel lll. Dogs |20 are provdied with a rounded cam surface I2l. A solenoid |22 is adapted to rotate a bell crank |23 pivoted at |24. Actuation of the solenoidhwill, therefore, move dogs |20 into engagement with wheelsv lll and lock the latter to the stationary object. A similar device vis provided for toothed Vwheel lil.

Therefore,selective actuation of the solenoids` determines the direction of Vrotation ofthe cable. It should be noted, however, that the direction of rotation` of the cable'is the same whether the cable is being fed out of or into the reel.

The cable is bent around shaft |03 as shown in Fig. 1. As the housing |05 rotates a rotation is imparted to the cable retained between the wheels I0| and |02. The reel I2 is rotatably mounted in frame I3" which is rotatably mounted inV a supporting member Il". This structure is similar to that described with reference to Fig. 1 except that the frame I3" is not power driven to cause rotation of thecable. It is freely rotatableV and merely rotates as the cable unreels. The cable is guided from reel i2". by a guide |30 which is on the axis ofY frame i3". Longitu- Vdinal movement of the cable rotates frame I3l which in combination with the rotating housing |05 imparts rotation to the flexible cable.

A switch t2 similar to that described with Vreference to the principal form of the invention is used to control actuation of solenoids |22 and will thereby control the direction of motion of the cable. The wires'leadingvfrom switch 62 in Fig. 17 may be connected with solenoids |22. A switch, I3| controls the electric motor power means.

A circular brush |32, as shown in Figs. 17 and 22, providedwith radially inwardly projecting bristlesmay be'used to clean of! the flexible cable'as it is retracted from the pipe.

We claim: s

1, A pipe-cleaning device comprising a support, a frame rotatably mounted in said support, a reel rotatably mounted in said frame having its axis of rotation at substantially right angles to the axis of rotation of'said frame, a flexible cable in said reel, mechanical means to selectively impart step by step longitudinal motion in either direction to said cable, said mechanical means being co-axial with said rotat able frame and shiftable in a reciprocating motion in response to rotation of said frame, means to permit passage of said cable from said reel :through the axis of said rotatable frame into said mechanical means and means to rotate said frame and said cable.

2. A pipe-cleaning device comprising a flexible cable, a cutting element on the end of said cable, a first means to selectively impart longitudinal motion in either direction to said cable, a, second means to impart continuous rotation in one direction to said cable, power means to drive said first and second means, a hollow casing extending from said first means to encase said moving cable, said casing being provided with a flexible portion whereby the casing may be used to direct the flexible cableinto the pipe to cleaned and vprotect the operator from the movingcable, and `a remote control mountedon sald-casingto control' said first means, said control normallyfkeepa reciprc-)cating member .adapted to engage said groove and impart a reciprocating motion to said lng said rst means inoperative whereby-release 5 ed* in said support, a rotatable reelpivotally mounted within said frame `and having lits axis at right angles tothe axis of said frame, a flexible vcable wound in said reel `andfhav'inga free end 4extending therefrom axiallyof` said `frame, a "'rst means ltorotate saidfframe, and a `second 15 reciprocating pinmeansV`4 to impart longitudinal lmovement in two directions `to sai-d cable, and

means enclosing said second. meanszccomprising an integral housing independent of Lsaid device` except for a single mounting Aon said support 2o whereby said secondmeans may .be detached and replaced as a unit when parts become worn,

4. A pipe-,cleaning device comprising anexible cable,`meansl to rotate said cable,a1first and sec and adapted tobe engaged withsaidl cable, means to selectively engage said first -tooth withsaid cable, means to reciprocate said4 rst inclined tooth whereby as the tooth reciprocates the cable is driven in arst direction on one'stroke and 30 the tooth rides over the cable on theLreturn stroke giving the cablean intermittent `^long`itu`dinal movement, means to release `said rst tooth and engage said secondtooth whereby `-Jsaidfcable is driven in a second longitudinal direction 5. A.pipecleaning devicecomprising a flexible cable, meansto rotate said cable, a sleeve circumscribing a 'portion of said cable, means to reciprocate said sleeve, a dog member pivoted in said;

i sleeve, said dog member being provided with'two 40 whereby an intermittent longitudinal-motion is teeth, means to pivot said dog memberto seleci tively engage one of said teethtwith saidcable and means to cause said tooth" to effect adriveof the cable, and meansto cause saidfteeth to effect a drive of the cablein opposite directions individually in engagement therewith. i i

'6. A-pipe-cleaning device comprising a `supvporting member, a frame pivotally mounted in said support'mem-ber, av reel-'pivotally mounted in said frame, said reel having its axis of rotation at right angles to the axis of rotation of said frame, a flexible cable wound in said reel and projecting through the axis of rotation of said frame, means to rotate said reel and thereby rotate said cable, a sleeve member slidably mount- 55 ed on said support and circumscribing a portion of said cable, means to reciprocate said sleeve member. a dog member pivotally mounted in said, sleeve member, said dog member being provided with two oppositely directed teethvadapted to Ydrive said cable in opposite directions when individually in engagement therewith, said teeth being adapted to individually engage the cable when said dog member is pivoted in opposite di- `sleeve, dog memberspvotallylmounted vin said sleeve Aon opposite sides of said intermediate portion of said sleeve, said dog members having oppositely directed teeth adapted to individually :engage said cableandeach adapted to drive said cable in one direction whereby said dogs transmit the reciprocation of said sleeve4v to intermittent rlongitudinal` movement of said cable, while saidl sleeve and dogs freely rotate with said cable and means to selectivelyengage one of said dogs with said'.cable.

` y i f8. `A pipe-cleaning device comprising a flexible cable, means to rotate said cable in one direction, a cylindrical sleeve slidably and rotatably mount- `ed circumferentially of a portion of said cable,

said sleeve beingprovided with a circumferential groove in the intermediate portion of said sleeve.

a reciprocating, member adapted to engage said l groove and impart a reciprocating motion to said ond tooth,said teeth being oppositelyl inclined sleeve, dog members pivotally mounted in said sleeve on opposite sides of said intermediate portion of said sleeve, said dog members having oppositely directed teeth adapted to individually engage said cable and each adapted to.drive said cable in one direction whereby said dogs transmit the reciprocation of said sleeve to intermittent longitudinal movement of said cableand said sleeve and dogs freely rotate with said cable, an eccentric pivotally mountedtin said groove and adapted'toalternately engage said dog members i whereby movement of `said eccentric selectively engagesone `of said dogs with said cable.

9. A pipe-cleaning' device comprising a flexible cable, a sleeve slidably and rotatably mounted circumferentially of a portion of said cable,means to rotate said cable,y means to reciprocatesaid sleeve,-meanscarried by said sleeve to drive said cable when said sleeve moves, in one direction,

, impartedl to said cable. and said sleevelrotates ywhen rections, whereby an intermittent longitudinal movement is imparted to said lcable by the reciprocation of said sleeve m'ember and the direction of movement is controlled by the pivoting of said dog member.

7. A pipe-cleaning device comprising a flexible groove in the intermediate portion of said sleeve,

with said cable. y

10. `A pipe-cleaning device comprising a flexible cable, means to rotate said cable; an inclined tooth adapted to engage said cable, said tooth being mounted for rotation about the cable axis means to reciprocate said tooth whereby said cable is driven when said inclined tooth moves in .one direction and an intermittent `longitudinal motion is imparted to said cable and said tooth rotates with said cable.

11. A pipe-cleaning device comprising a flexible cable, a cutting element on the end of said cable, an idling wheel in one side of said cable, a driving wheel on the opposite side. of said cable, said driving wheel -being keyed to a shaft at right angles to said cable, a plurality of pins projecting through the face of said driving wheel and toward said cable, means to rotate said driving wheel, cam means to cause some of said pins to engage said cable and impart longitudinal motion to said cable, means to rotate said shaft in an axial plane whereby said cable is rotated.

12. A pipecleaning device comprising a flexible cable, a cutting element on the end of said cable,

a housing having an opening through which said A some of said pins with said cable as said shaft isrotated whereby longitudinal motion is imparted to said cable, a first gear on said shaft, a stationary second gear at right angles to said rst gear and in engagement therewith and a means to rotate said housing whereby said shaft is rotated and said cablevmoved longitudinally and rotated. f

13. A pipe-cleaning device comprising a exible cable, a cutter element on the end of said cable, a housing having an opening through which said cable passes, a rotatable shaft in said housing at right angles. to said cable,l a driving wheel insaid housing keyed to said shaft at one cable, means to impart a continuous rotation to said cable, a first reciprocating means to engage said cable and impart step by step longitudinal motion in a first direction to said rotating cable, a second reciprocating means adapted to engage said cable and impart step by step longituside of said cable, a plurality of pins projecting through the face of said driving wheel and toward said cable, a `cam surface on said housing adapted to engage some of saidpins with said cable as the shaft is rotated whereby longitudinal motion is imparted to the cable, a means of ro- *tating said housing, a rst gear on said shaft, a

pair of gears rotatably mounted on opposite sides of said housing and each iny engagement With said first gear, means tol individually lock said pair of gears against rotation whereby when said yhousing is rotated in one direction said first gear engages with the locked gear to impart rotation to saidvshaft and longitudinal motion to the cable and release of said locked gear and locking of its mate reverses the x longitudinal motion of the cable for the same rotation of the housing.

14. A pipe cleaning device comprising a support, a rotatable frame member pivotally mounted in said support, a rotatable reel pivotally mounted within said frame and having its axis at right angles to the axis of said frame, a flexible cable wound in said reel and having a free end extending therefrom axially. of said frame, a first j means to rotate said frame and asecond reciprocating' pin means to impart longitudinal movel ment in two directions to said cable.

15.v A pipe cleaning device comprising a sup- `-port, a frame rotatably mounted insaid support, a reel rotatably mounted in said frame and having'its axis of rotation at right angles to the axis of rotation of said frame, a flexible cable in said reel, power means to rotate said frame,A

whereby said cable is rotated, a reciprocating Vmeans to impart step by step longitudinal movement to said cable and to selectively feed said y cable out of said reel and return said cable to said reel.

16. A pipe cleaning device comprising a flex- Vible cable, a cutting element on the end of said.

dinal motion ina second direction to said cable.

17. A pipe cleaning device comprising a flexible cable, a cutting element on the end of said cable, means to impart a continuous rotation to said cable, a first reciprocating means to engage said cable and impart step by step longitudinal motion in a first direction to said rotating cable, a second reciprocating means adapted to engage said cable and impart step by .step longitudinal motion in a second direction to said cable and control means to selectively actuate said first and said second reciprocating means.

18. A pipe cleaning device comprising a flex' ible cable, means to rotate said cable, a .member slidably mounted adjacent a portion of y said cable, means to reciprocate said member, a first and a second tooth movably mounted in said member and adapted to engage said cable, se-

lective means to individually engage said first and said second teeth with said cable, said iirst tooth being adapted to drive said cable during motion of said reciprocating member in a first direction and to slide relative to said cable during motion of said reciprocating member in a second direction, said second tooth being adapted to drive said cable when said member moves in said second direction and to slide relative to said cable when said member moves in the iirst direction whereby the selective engagement of the individual teeth with said cable will determine the direction of motion of said'cable.

19. A pipe-cleaning device comprising asupporting frame, a flexible cable supported thereon, a cutting element on the end `of said cable, a vmeans to impart rotative movement of said cable, and a second means to impart selectively longitudinal movement to said-cable, comprising^a slidable cable engaging means, an eccentric member mounted to rotate with said cable, a means mounted on the frame to contact said member to derive reciprocatory movement there' 

